Final answer:
In the preschool stage, a child will likely understand that the taller glass contains the same amount of water as the shorter glass when water is poured from one of the two identical four glasses into a toddler glass of a different shape.
Step-by-step explanation:
In the preschool stage, a child will likely understand that the taller glass contains the same amount of water as the shorter glass when water is poured from one of the two identical four glasses into a toddler glass of a different shape.
This understanding is related to the concept of conservation, which is the understanding that the basic properties of an object or substance stay the same even when its appearance changes.
Preschoolers develop this understanding through cognitive development and exploration of their environment.